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DetCord

747 Falls Out of the Sky

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News say there were 5 on board. Cargo was 6 military vehicles, which must have shifted to the tail. Most shocking to think the 5 of them knew they were going to die from the moment they took off went VTOL.

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There were 7 on board. If I remember right, there are special procedures in place for both take off and landing that includes high angle of attack take offs and steep descents.

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Bad stall.

 

Looks like a PRI stall but it's not, at least not from my experience. It looks like the load shifted.

 

The climb rate/pitch is normal for a combat takeoff. If it was carrying six MRAP's, most of which weigh in excess of 30k pounds, and they did indeed shift or the loadmaster ######ed up and didn't do his job... Well, that could explain the violent roll to the right.

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Not much other than a load shift could cause a stall like that during takeoff, well, all 4 engines dying at once might too but the likelyhood of that is kinda remote.

No expert by a long shot but I'd guess the wingover to the right was pilot induced, check the slight yaw/roll left just before it departs controlled flight from lack of airspeed. Pilot probably tried controlling that just before the airspeed dropped far enough that control was lost = continued bank right from inertia.

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Crash report is out now and it was indeed a shifted load. Shifted bad enough that it broke through the rear bulkhead, knocking out both the FDR and CVR and likely also some hydraulics systems. Happened right at the moment of rotation so they were doomed from the moment that plane got in the air.

CVR recordings from the previous flight, Bagram was a refuelling stop, catches members of the crew talking about the load already having shifted from heavy braking.

 

Summary

A National Air Cargo Group (MUA) 747-400 Boeing Converted Freighter (BCF) [RT075/N949CA]

crashed shortly after takeoff from Bagram Air Force

Base (OAI), Afghanistan on April 29, 2013. There

were no survivors among the 7 crew members onboard. The event is under investigation by the Afghanistan Ministry of Civil Aviation and Tourism (MOCAT) with assistance from the National

Transportation Safety Board (NTSB), the Federal Aviation Administration (FAA), National Air Cargo and Boeing. The Flight Data Recorder (FDR) data were provided to Boeing for analysis.

 

 

The FDR data show a normal takeoff was performed

from OAI, but just after lift-off, the FDR recording

stopped with the airplane approximately 33 feet abov

e the ground. Video of the airplane just after lift-

off at a low altitude over the runway

shows an extremely high pitch attitude before experiencing a stall

and impacting the ground at a nose-down pitch attitude. The airplane was carrying five Mine Resistant

Ambush Protected (MRAP) vehicles, each weighing at least 28,000 pounds. The available FDR data, Cockpit Voice Recorder (CVR) data, and physical evidence (video, airplane component analysis), withadditional support from simulation analysis, suggest th at around lift-off, at least one MRAP (aft-most)b roke loose of its restraints, shifted aft and damage

d the FDR/CVR before penetrating the aft pressure bulkhead. The MRAP’s aft movement was determined to have compromised at least Hydraulic Systems #1 and #2 and may have contacted the stabilizer jackscrew assembly. Simulation analysis indicated that

an incremental airplane-nose-up stabilizer deflection

(stabilizer would have likely deflected Leading

Edge[LE] down if it were free to rotate) of 5 units

or more could have produced the observed airplane

motion.

If the stabilizer jackscrew actuator had been displaced downward by the MRAP during takeoff,

continued safe flight and landing most likely would not have been possible. An investigation of the

stabilizer jackscrew occurred on the 15

th of January 2014. Results of the examination were

 

inconclusive as to whether displacement of the stabilizer jackscrew from its fuselage mount occurred prior to impact.

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